Obelisk of Axum , Ethiopia

The Obelisk of Axum is a 1,700-year-old, 24-metres tall granite stele/obelisk, weighing 160 tonnes, in the city of Axum in Ethiopia. It is ornamented with two false doors at the base and features decorations resembling windows on all sides.
Source :Wikipedia
Photo source :kathandalaninethiopia.blogspot.com